looks like science fiction, right? online retailers, one online retailer is turning to unmanned drones to drop off your packages at your door. how cool is that? how cool. bill: that might be a pretty good twitter question today. would you shop this way, america? i know one person would. martha: like the owls in the "harry potter" delivering the mail. bill: the first person who would is mccallum. martha: absolutely sign me up. ♪ pp ÷ó martha: well the investigation is now underway into the death of paul walker and it looks like speed was indeed a factor in this crash. boy, what a scene that is. 40-year-old actor riding in a friend's porsche after a charity event outside of los angeles, the driver loss control and crashed into a light poll. walker and the driver were both killed. there was not much left of that vehicle. today, fans have gathered at a makeshift memorial at the scene. walker's "fast & furious" co-star tyrese gibson showed up at the memorial. you can see how emotional he was. this is heart-breaking. i